diff --git a/.rubocop.yml b/.rubocop.yml
index 319efe7e0dc..923ea00a106 100644
--- a/.rubocop.yml
+++ b/.rubocop.yml
@@ -96,7 +96,7 @@ Style/CaseEquality:
 Style/CaseIndentation:
   Description: 'Indentation of when in a case/when/[else/]end.'
   StyleGuide: 'https://github.com/bbatsov/ruby-style-guide#indent-when-to-case'
-  Enabled: false
+  Enabled: true
 
 Style/CharacterLiteral:
   Description: 'Checks for uses of character literals.'
diff --git a/app/finders/notes_finder.rb b/app/finders/notes_finder.rb
index bef82d7f0fd..6fe15b41060 100644
--- a/app/finders/notes_finder.rb
+++ b/app/finders/notes_finder.rb
@@ -7,18 +7,19 @@ class NotesFinder
     # Default to 0 to remain compatible with old clients
     last_fetched_at = Time.at(params.fetch(:last_fetched_at, 0).to_i)
 
-    notes = case target_type
-    when "commit"
-      project.notes.for_commit_id(target_id).not_inline.fresh
-    when "issue"
-      project.issues.find(target_id).notes.inc_author.fresh
-    when "merge_request"
-      project.merge_requests.find(target_id).mr_and_commit_notes.inc_author.fresh
-    when "snippet", "project_snippet"
-      project.snippets.find(target_id).notes.fresh
-    else
-      raise 'invalid target_type'
-    end
+    notes =
+      case target_type
+      when "commit"
+        project.notes.for_commit_id(target_id).not_inline.fresh
+      when "issue"
+        project.issues.find(target_id).notes.inc_author.fresh
+      when "merge_request"
+        project.merge_requests.find(target_id).mr_and_commit_notes.inc_author.fresh
+      when "snippet", "project_snippet"
+        project.snippets.find(target_id).notes.fresh
+      else
+        raise 'invalid target_type'
+      end
 
     # Use overlapping intervals to avoid worrying about race conditions
     notes.where('updated_at > ?', last_fetched_at - FETCH_OVERLAP)
diff --git a/lib/api/api_guard.rb b/lib/api/api_guard.rb
index cb20bf0720d..b9994fcefda 100644
--- a/lib/api/api_guard.rb
+++ b/lib/api/api_guard.rb
@@ -47,16 +47,12 @@ module APIGuard
         case validate_access_token(access_token, scopes)
         when Oauth2::AccessTokenValidationService::INSUFFICIENT_SCOPE
           raise InsufficientScopeError.new(scopes)
-
         when Oauth2::AccessTokenValidationService::EXPIRED
           raise ExpiredError
-
         when Oauth2::AccessTokenValidationService::REVOKED
           raise RevokedError
-
         when Oauth2::AccessTokenValidationService::VALID
           @current_user = User.find(access_token.resource_owner_id)
-
         end
       end
     end
@@ -121,7 +117,8 @@ module APIGuard
 
     def oauth2_bearer_token_error_handler
       Proc.new do |e|
-        response = case e
+        response =
+          case e
           when MissingTokenError
             Rack::OAuth2::Server::Resource::Bearer::Unauthorized.new